Pulsating device for milking apparatus.



GOOD. PULSATING DEVICE-FOR MILKING APPARATUS.

APPLICATION FILED J'AN.27. 1910.

Pa te nted June 7,1910

2 SHBETB-SHBET 1.

604/224 fkz f ya 6 0d 04%;

E. E. GOOD.

PULSATING DEVICE FOR MILKING APPARATUS. APPLICATION FILED JAN. 27 1910.

960,636, Patented June 7, 1910.

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i 13 H5 L a/zo mmsmms PATENT ()FFI Q w To all who'm' t't may concern.

i the following to be a full, clear, and exact descriptionflof the invention, such as will appertains to make and usethe same.

S. N. 451,492, filed September 3rd, 1908 titled Pul i tilig"device"for milkin i plie to a milkingapparatus. Fig. 2 is a .sator removed from working position; and Figs; 3 and 4 are vertical sections taken apof which a. partial vacuum-is produced in fzen of the United States, residing at \Yaterloo, inthe county of Blackhawlrand State soon, or nsurance, IOWA.

runsa'rme DEVICE FOR- mrmrme Arrium'ru s.

s ecification ofLettersYateiitv Patented'Jime'L 1910. application filed January 27 1910. se ia No.;540,32s.

vided with reinoviible covers10 of the isual Be it known that I, EZRA IlGoon, acitithe said cans air tightfwhc'n applied. As shown in the drawings, the'iinprovedpulsator is used. in connection with a device as of Iowa, have invented certain new and usedisclosed and claimed in: my prior patent ful Improvements in PulsatingDcvices for M lking Apparatus; and I do hereby declare 1909, and entitled milking? apparatus, which device is applied h to thegcans 'and' enable othersskilled in the art to-which' it Iy invention relates to a mechanism for and tubes ot the systemibyfth'e open ng of producing pulsations or variationsin pressure in the service pipes and tubes of milking'apparatusand it is in the nature of an improvement on the device disclosed and broadly claimed iii 'my prior application,

of said improved attaclnneiihit isonly desirable for the purpo'sojof this to note the air: outlet or suction; pipe, 12" nane tends fromthe can that, T

nected by a-fiexible tubeil3jto. 0f the cooperating branch pip ratusl I I The invention consists of the novel devices and combinations of deviceshereinafter described and defined in-the claims.

, In the accompanying drawings which illustrate the invention, like characters indicate like parts throughout the several views. I

,Rer'errmg to the drawin 's, Figure his a considered sufficient-to state thatfwl en thevacuum or suction is increased'in the service pipe 3, thebranch pipe 5 and the tube 13, milk will be drawn nto the-can' tlirougli' pers ective view showing t 1e invention apside elevation showing the improved pultor, the numeral 17 indicates the casing thereof. i'eferablyrin theiiorm of a'cast block proximately on the line m m of Fig. 2, showin different positionsbf the movable parts 0 said p'ulsator;

In Fig. 1, the numeral 1 indicates'the floor and the numeral 2 stall posts rigidly secured thereto in the usual or any suitable way. The character .2 indicates the cows within the stalls which are being milked by the imspectively are arranged to worlr in a plunger valve-20 and'pistonfll. Thepiston 21 is lower end of whicha weight 23 'is"attached. The valveseat 18 is transversely intersected by an intermediate port 24, a lower oi't 25 Within the va ve casing 17 is an a rconduit 27that connects-the inner extremities'ofthethree ports '24, 25 and 26, and at-itslower extremityopens into the lower end of the valve-seat 18 and into -the upper end the piston seati19. The outer extremity of the intermediate port 24: is connected to the pump pipe 4, while the intermediateportionof the air conduit is connected to one endof the service 'pipe 3. The outer extremity or portion is open to the atmosphere. The upper extremity of the port 26 is connected to one end of a secondpipe and pump pipe, thelatter of which leads to a suitable air pump, not shown, by means the various p1 es and tubes of the milkiiw apparatus e service pipe 3' has valved branch pipes 5,-of which there is shown one for each s The numera 6 indicates the'vacuum ga applied to thepump pi 4, and the numeral 7 indicates a reservoir which, as'shown, is connected to the pump pipe t by a short depending pipe 8. p

The numerfii 5 indicates milk cans proor any suitable construction whichfwill nuke 14, need notrbe herein 'considered, it being provided with a depending stem 22', at the No.- 937,789, issued oftlate .OdtbberfQSth,

serves to prevent air fron ente'ri'ng the cans when air is admitted into the service pipe the air-vent ofthepulsator.iiofithelparts having an upper plunger valve seat 18 and a lower depending piston seat; 19, which reiois ary service pipe 3. The secondary service pipe 3 is connected by a branch pipe 28 to the primary service pipe 3. The plunger valve 20 is provided with 'an intermediate annular port 20, which, when the saidvalve is in its uppermost position (as shown in Fig. 3 registers with and opens the port 24, an when the said valve is in its lowermost position (shown in Fig. 4), it registers with and opens the fresh air intake port 25.

To' the casin 17 is secured a air of laterally spaced -epending hanger ars 29, to the lower ends 0 trippin lever 32 are independently pivoted. The bi urcated lever 32, as shown, is connected by short links 33 to'the piston stem 22. The members of the lever 32 work between upper and lower stops 34 and 35 rigidly but adjustably secured, preferably, by nutted bolts, in a segmental slot 36 formed in the head 31. The said head 31 is provided with'a projecting arm 37 which is pivotally connected to the lower end of a pair of-laterall spaced links 38, the upper ends of whic 1, as shown, are pivotally connected to a T-shaped bracket 39 rigidly secured to the upper end of the plunger valve 20. The arm 37 and the links 38 constitute a toggle connection between the plunger valve 20 and a support that is fixed relatively to the casing 17. A supplemental laterally bent arm 40 is rigidly secured to the oscillato head 31 and is provided with-an adjusta le weight 41, the purpose of which will presently ap- The port 24. is preferably provided with an adjustable choke valve in t e form of a screw 42, and a similar choke valve or screw 43 is preferably applied in the connection between the piston seat 19 and the air conduit 27. These choke valves provide for the regulation of the flow of air through the res ective ports as r uired to properl time the ulsatory interv ls.

' at would be assumed, the normallposition of the parts is shown in Fig. 3, din

this position,'the ports'25'and 26 are losed while the rt 24 is opened by .the valve: 20 and afi'or s communication between the pump pipe 4- and the service pipe 3; and

through the branch pipe 28, the secondary service pipe 3, as wel as the primary service pipe 3, are subjected to the suction or partial vacuum produced in the said pump pipe 4. This suction or drawing action in the service pipes, of course, it will be understood, operates through the branch pipe 5 and the connected tubes of the milk cans to draw the milk from the teat cups into the cans.

\Vhen the suction or partial vacuum has been increased to a predetermined extent, the

weighted piston 21 will be raised in its seat 19, and when it close'approaches the limit of its uppermost movement, the lever 32 which, by means of a pin tions bein striking the upper stop 34 will throw the toggle 37-38 from its normally set or locked position slightly to the r ht of its dead center, toward a position s ightly at the left of its dead center. When the planger valve is in its upper position, shown in Fig. 3, and suction is effective on the weighted piston 21, the same suction is efiective on the bottom of the plunger valve and exerts a downward drawing force thereon,

so that the instant the to gle 37-38 is thrown to the left of its dea center (directaken in respect to Fi 3 and 4), the saidplungeryalve will bemstantly dropped to its lowermost position, shown in Fig. 4, thereby closing the port 24 and cutting ,oif communication between the pump pipe 4 and the service pipes 3-3, and at the same time, letting air into the said service pipes and mto the piston seat 19 through the conduit 27, the port 25, the port 26 and the upper extremity of the piston seat 18.

This, as is evident, quickly decreases the suction in the said service ipes, as r uired to produce a releasing pu ation, an also decreases the suction or vacuum in the piston seat 19. When the suction in the piston seat 19-is decreased to a certain desired extent, the weighted piston 21 will drop by gravity back to its normal position, and at the limit of.its downward movement, the lever 32 will engage the lower stop 35 of the head 31, thereby forcing plunger valve 20 to its rais or normal position, shown in Fig. 3. When thevalve 20 y the toggle 7 37-38 back to its locked osition and the is lowered and the weighted piston 21 is raised, as shown in Fig. 4, the lower. stop '35 of the head 31 is in close engagement with the lever 32, and the'weight 41 on .the arm 40 co-acts with the weight of the valve 20 and tends to resist the downward m'ovement of the said weighted piston 21. The weight 23, however, is such that it will overcome the forces above noted and the weight 41 may be set, so that the said weighted piston 21 will become active to restore or raise the valve 20 whenever the suction or vacuum has been decreased to an 7 extent which will give the proper timing and variation in pressure or suction action of the pulsations.

That I claim is:

1. In a milking apparatus, a. pulsator comprisin a casing connected between the service an pump pipes of said apparatus, an air vent leading to said service pipe, a. valve normally closing said air vent and opening communication between said service and 'pump pipes, and which valve is normall y subject to the drawing force or partial vacuum in said system, anda controller subject. to varying pressure from within said service pipeand provided with connections for moving said yalve and for holding scoped 8 r the same in its normal position, substantially as described.

- 2. In a milking apparatus, a pulsator comprising1 a casing connected between the service an pump pipes of said apparatus, an air vent in said casing leading to said service pipe, a valve normally closing said air vent and opening connnunication between said service and pump pipes, the said valve at its lower end being subject to suction or partial vacuum in said pumppipe, :1. toggle-acting connection normally holding said valve in'its raised or normal position, and a controller subject to varyin pressure from within said service pipe and operative on said toggle connection to effect movements of said valve, substantially as described.

3. Apulsa-ting device, comprising a casing having a piston seat and a plunger valve seat, an air conduit connecting said pump and service pipes through said casing and leading to the upper end of said piston seat and the lower end of said plun er valve seat, an air vent leading into sai air conduitthrough said plunger valve seat, a plunger valve working in said plunger valve seat, normally closing said air vent but connecting said pump and service pipes, which valve is movable into position to open said 'air vent and cut off communication between said pum and service ipes, and a controller wi-ti connections or effecting movements of said valve, subject to varying pressure from within said service pipe, substantially as described.

4. In a milking apparatus, the combina tion-with a pump pipe and a plurality of service pipes, of a pulsating device compris ing a casing connected between said pum pipe and service pipes, an air vent in sai casing leading to said two service pipes, a valve normally closing said air .vent and connecting said pump pipe to said service pipes, which valve is movable in position to open said air vent to both service pipes and to out 01f communication between said pump and service pipes, and a controller with connections for effecting movements of said valve, itself subject to varying pressure from within said service pipes, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

EZRA E. GOOD.

\Vitnesses:

F. D. MERCH NT, HARRY D. KILGORE. 

